Table of Contents

Fertility and Oral Contraceptive Use Study (FOCUS) (ICPSR 34560)

Principal Investigator(s):Brunner Huber, Larissa R., University of North Carolina. Department of Public health Sciences

Summary:

Oral contraceptives (OCs) are the most popular reversible method of contraception in the United States. Although most women using OCs experience reliable protection against pregnancy, nearly half of the 3 million unintended pregnancies in the United States annually occur among the 90 percent of women who use contraception. While lack of adherence to OCs has been assumed to be the primary cause of OC failure, recent findings suggest that obesity may reduce the biological effectiveness of OCs. The... (more info)

Oral contraceptives (OCs) are the most popular reversible method of contraception in the United States. Although most women using OCs experience reliable protection against pregnancy, nearly half of the 3 million unintended pregnancies in the United States annually occur among the 90 percent of women who use contraception. While lack of adherence to OCs has been assumed to be the primary cause of OC failure, recent findings suggest that obesity may reduce the biological effectiveness of OCs. The goal of this project was to examine methodological issues related to the successful implementation of a large, prospective cohort study to investigate the role of obesity in OC failure.

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Study Description

Funding

This study was funded by:

United States Department of Health and Human Services. National Institutes of Health. Eunice Kennedy Shriver National Institute of Child Health and Human Development